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fishtech

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Hi,

Is there a guideline for creating custom music-on-hold files to upload into Operator?

The format should be WAV, but what other options should be chosen?

Thanks,

ft.
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Filip Jenicek (Kerio)

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Hi,

Operator will transcode the file, any wave should do fine. The target format is uncompressed WAVE 8kHz, 16bit, 1 channel.

Filip
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Vladimir Toncar (Kerio)

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I would add that the music files should have a relatively low volume. From experience, normalizing the file to the maximum amplitude of about -12dB should do the trick. You can use for example Audacity (open source).
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fishtech

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Thanks for the info.

Just in case it helps anyone else here are the steps I followed converting MP3 with Audacity on OSX:


1. Open Audacity prefs, then set

Quality > Default Sample Format > 16-bit
Quality > Default Sample Rate > 8000


(not 100% sure if this helps or not).

2. Open audio file to be converted with Audacity (mine were MP3).

3. Select Tracks menu > Stereo Track to Mono

4. Select Tracks menu > Resample > 8000 > OK

5. Select Effect menu > Normalize > -10 > OK
(-10 sounded better than -12 to me when I tested with our system)

6 Select File menu > Export > Format: WAV (Microsoft) > Save


Not sure if this is the correct or the most efficient way to create these files. Please amend/comment if there is a better way.

Many thanks,

ft.

[Updated on: Fri, 14 February 2014 21:19]

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